In all cases the sample is attached to a copper sample block that has a tapped bolt circle (four 10-32 holes on a 1.75 inch diameter). The distance D from the bottom surface of the sample block to the sample center is determined, in part, by the height of the outer vacuum can. With the sample stage in its home position (z=0), D is 69 mm for the shorter vacuum can (H = 286 mm, see Figure 1), 91 mm for the longer can (H = 308 mm, see Figure 2).
FIGURE 1: Displex mounting scheme with 286 mm vacuum can
Spacer FIGURE 2: Displex mounting scheme with 308 mm vacuum can
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Last modified 24-March-2003 by website owner: NCNR (attn: John Copley)